JP5600481B2 - Method and apparatus for constant supply of round bar material bottom surface level - Google Patents

Description

  The present invention relates to a method and apparatus for supplying a constant bottom surface of a round bar material.

  Conventionally, in a cutting machine such as a circular saw machine or a horizontal band saw machine, a material supply device is provided on one side (upstream side, machine rear side) of the cutting machine and the other side (downstream side, machine) On the front side), a product cradle for products cut by a cutting machine is provided. When the material supply device sequentially cuts a plurality of long materials such as round bars, stock the long material and the remaining material to be reused after the cutting on the rear side of the cutting machine. And a feeding conveyor composed of a plurality of V-groove rollers.

  Here, the feed conveyor feeds the material to the cutting machine by rotating the V-groove roller in the feed direction (X-axis direction), and the benefit conveyor crosses the chain perpendicular to the feed direction on the horizontal plane. The material is fed to the feeding conveyor while being freely rotatable in the direction (Y-axis direction), and the feeding groove is fed to the V-groove roller to receive the material fed to the feeding position from the benefit conveyor. There is an elevating device for placing the material, so that the V-groove roller can move up and down in the vertical direction (Z-axis direction) perpendicular to the XY axis to place the material, and the supply device provided for these movable positioning Is known (for example, Patent Document 1).

Japanese Utility Model Publication No. 7-24524

  The case where a raw material is fed to a cutting machine by the raw material supply apparatus described in Patent Document 1 will be described with reference to FIG.

  First, the benefit conveyor places the right side surface (the right side in FIG. 13) of the material W such as a round bar placed on the chain in the benefit conveyor (not shown) at the position coincident with the main body vice reference line KK of the cutting machine. Position.

  Next, the feed conveyer (not shown) is illustrated after the V-groove roller 101 of the feed conveyor composed of a plurality of V-groove rollers 101 is horizontally moved in the Y-axis direction to a position where the center of the V-groove roller 101 coincides with the center of the material W. The V-groove roller 101 is moved up and down (raised) in the Z-axis direction by supporting the material W on the V-groove roller by lifting the O-groove roller to a fixed position by an omitted lift cylinder. The material W is rotated in the feeding direction, the material W is fed by a desired length, and is fixed by a fixed vise of a cutting machine and cut.

  When a long material such as a round bar is cut by the material supply device described in Patent Document 1 described above, there are the following problems.

  Referring to FIG. 13 again, when the right side surface of the material W having a different diameter is positioned on the main body vice reference line KK and the material W is lifted and supported to a certain position by the V-groove roller 101, the material is Since the position of tangential contact with the V-groove roller varies depending on the material diameter, the distance from the bottom of the V-groove roller to the bottom surface of the material changes, thereby causing variations in the bottom surface level of the material with respect to the machine pass line. For example, when the angle of the V groove of the V groove roller 101 is 151 degrees, the difference in the level of the bottom surface of the material W supported by the V groove roller 101 between the round bar of φ330 and the round bar of φ30 is about 4. 9 mm.

  Then, when feeding the round bar material W to a cutting machine such as a band saw machine, the height of the V-groove roller is adjusted so that the bottom level of the φ30 round bar becomes the conveyance level of the conveyance roller on the cutting machine side. The bottom surface of the round bar of φ330 is located 4.9 mm above the conveying level on the cutting machine side, so that the material W falls in the feed, and conversely the bottom level of the round bar of φ330 is the cutting machine. When adjusted to the conveyance level on the side, the bottom surface of the φ30 round bar is located 4.9 mm below, so that it collides with the conveyance roller on the cutting machine side, making it difficult to feed the material. is there.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to feed a round bar material to a cutting machine such as a band saw machine by a feed conveyor having a V-groove roller. By providing a material supply method and apparatus for a cutting machine capable of mechanically correcting the difference between the bottom surface level of the round bar material supported by the V-groove roller of the feed conveyor and the conveying level on the cutting machine side, is there.

Round bar material bottom level constant supply method according to claim 1 as a means for solving the problems described above, in the round bar material supply method for supplying a round bar material in a cutting machine in the longitudinal direction of the round bar stock, the round direction X-axis direction to Okuzai the bar stock to the cutting machine, X-axis Y-axis direction and the direction orthogonal on a horizontal plane with respect to the direction, the X, the direction perpendicular to the Y-axis direction and Z axis direction, a round bar material feeding means for Okuzai the X-axis direction for conveying the round bar material supported by the V-groove roller to the cutting machine, Y-axis to pass the round bar material into the round bar material feeding means a round bar material benefits means for feeding material in the direction, and the round bar material side level adjusting means for positioning the Y-axis direction when the round bar stock feeding means receives said round bar material from the material benefits means, said rod When the material feed means is Okuzai the round bar material into the cutting machine Material and a round bar material bottom level adjustment means for adjusting the height in the Z axis direction is a height direction, to the round bar material benefit means the round bar material of the end surface level of the cutting machine body vice reference line At the same time the round bar material to match the sheet material, the round bar material bottom level adjusting means the positioning position of the round bar material side level adjusting means, supported by the V-groove rollers of the round bar material feeding means said differentially uniquely adjust the height of the round bar material such as a mechanically correcting the same level level of the bottom level of the round bar material and the transport level of the cutting machine side, the round bar material in which the round bar material of the bottom level when the feeding means is Okuzai to said cutting machine is characterized in that a constant.

Round bar material bottom level constant supply device according to claim 2, and the material feeding device for Okuzai the round bar material in the longitudinal direction of the round bar stock to a cutting machine, the round bar material into said workpiece feeder benefit in the round bar material feeder and a material benefit apparatus, the direction of Okuzai round bar material to the cutting machine and the X-axis direction, the material benefits system are orthogonal on a horizontal plane relative to the X-axis direction the direction in which benefits the round bar material into the material feeding device and the Y-axis direction, the X, when the vertical direction to the Y-axis direction and Z axis direction, for supporting at least the round bar material with a V-groove wherein the feed material conveyor comprising a rotatable material feed roller, a round bar stock bottom level adjusting device for the Z-axis direction adjustment of the material feed roller, a position to be benefits of the round bar material from the material benefit device material Position the V-groove center of the feed roller in the Y-axis direction Round bar comprises a material side level adjusting device, the round bar material comprising a material Okuzai device for Okuzai to the cutting machine in the X-axis direction, material benefits including a rotatable chain supporting at least the round bar material that includes a conveyor, the round rod material comprises a material benefit apparatus for benefits in the Y-axis direction to pass into the material feeding device, the main device reference line of said workpiece benefit apparatus the cutter an end face level of the round bar material the round bar material to match in accordance with the operation for positioning in the Y-axis direction to, said rod side leveling system Y-axis direction so as to match the center of the round bar material as a V-groove center of the material feed roller upon positioning, the round bar bottom level adjusting apparatus difference mechanically correcting the same level the level of said V-groove rollers supported the round bar material of the bottom level and the transport level of the cutting machine side So as to uniquely adjust the height of the round bar material, in which the round bar material of the bottom level when the material feeding device is Okuzai to said cutting machine is characterized in that a constant.

The round bar material bottom level constant supply device according to claim 3 is the round bar material bottom level constant supply device according to claim 2, wherein the round bar side surface level adjustment device and the round bar bottom surface level adjustment device are: an integral construction, is characterized in that an inclined surface which is inclined is provided slidably engaged with at least one comprises a guide base in the direction of the body vice reference line .

  The round bar material bottom level constant supply device according to claim 4 is the round bar material bottom level constant supply device according to claim 2, wherein the round bar material is in tangential contact with the V groove of the material feed roller, and V When the groove angle is 2α and the inclination in the Z-axis direction of the V-groove center is β, the Y-axis direction positioning means and the Z-axis direction positioning means in the round bar side surface level adjusting device and the round bar bottom surface level adjusting device Is a structure that is uniquely linked, and is provided so that the ratio of “adjustment amount in the Z-axis direction” / “difference in the radius of the round bar material” is (cosβ−sinα) / sinα. In addition, the ratio of “adjustment amount in the Y-axis direction” / “difference in the radius of the round bar material” is set so that the positioning can be adjusted to sin β / sin α.

The round bar material bottom surface constant level supply device according to claim 5 is the round bar material bottom surface constant level supply device according to claim 4, wherein “90 ° −angle α + angle β” or “90 ° −angle α−angle”. “β” is the inclination of both of the V-grooves, and it is related to the weight of the round bar material and the horizontal external force applied to the center of the round bar material, whichever angle is smaller, 5% to 25% of the weight of the round bar material . The angle at which the horizontal external force is balanced is defined as the angle, and β is 0 ° to 5 °.

  According to the round bar material bottom level constant supply method and apparatus of the present invention, when a round bar material is fed to a cutting machine such as a band saw machine by a feeding conveyor having a V groove roller, the V groove of the feeding conveyor is used. The difference between the bottom surface level of the material supported by the roller and the conveyance level on the cutting machine side can be mechanically corrected in accordance with the operation of adjusting the side surface level of the material to the main body vice reference line.

  Therefore, when feeding the round bar material to the cutting machine, the operator does not have to worry about the difference between the bottom level of the material supported by the V groove roller of the feeding conveyor and the conveyance level on the cutting machine side, It is no longer difficult for the material to collide with the conveying roller on the cutting machine side and to feed the material.

Explanatory drawing of the side surface of the raw material supply apparatus with respect to the cutting machine which concerns on this invention. Explanatory drawing of the AA cross section of FIG. CC sectional drawing of FIG. FIG. 3 is a top view of FIG. 2. BB sectional drawing of FIG. FIG. 6 is a top view of FIG. 5. Intersection points P _{1 to} P ₄ between the bottom surfaces of the materials W _{1 to} W ₄ and the center V groove V of the material feeding roller when the side surfaces of the round bar materials W _{1 to} W _{4 having} different diameters are positioned on the main body vice reference line BL. The figure explaining straight line AA which passes through. The figure explaining the relationship between the angle (alpha) and gradient (theta) of the V groove of the raw material feed roller 3 in the round bar raw material bottom level constant supply method and apparatus concerning this invention. FIG. 9 is a diagram for explaining the relationship between the V-groove angle of the material feed roller 3 and the gradient θ of the inclined surface 37 when the V-groove center V of the material feed roller is inclined by β degrees with respect to the Z axis. It is the figure which considered about the gradient when the outer diameter part of the round bar raw material W does not contact in contact with the inner surface of V groove | channel of the raw material feed roller 3. FIG. FIG. 10 is a diagram for explaining the relationship between the angle α, the angle β, the weight of the material, and the horizontal external force in FIG. 9. In FIG. 9, the material length is φ400, the material weight W is 150 kgf, the horizontal external force H is 1 to 30% of the workpiece weight, the V groove width (one side), and the V groove width (one side) is 40 mm to 95 mm according to the design conditions. An example of calculation of the allowable range of the angle β. Explanatory drawing of the prior art example at the time of positioning the side surface of the round bar raw material from which a diameter differs in a main body vice reference line.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3, for example, on the rear side (right side in FIG. 1) of a cutting machine 1 such as a horizontal band saw or a circular saw, a round bar material W is fed in the X-axis direction, which is the longitudinal direction thereof. A material feed device 5 having a plurality of freely feedable material feed rollers 3 for feeding to the cutting machine 1 and feeding a round bar material W in the Y-axis direction orthogonal to the longitudinal direction on a horizontal plane. A material benefit device 9 having a material benefit conveyor for providing the material to the material feeding device 5 is provided.

  The material benefit conveyor 7 is rotatably wound around a plurality of chains 11 extending in the Y-axis direction orthogonal to the longitudinal direction on the horizontal plane between the plurality of material feeding rollers 3 and arranged in parallel at appropriate intervals. In this configuration, the material supply conveyor 7 can position the material of the round bar material W above the roller reference line RL (see FIG. 2) in the X-axis direction formed by the plurality of material feed rollers 3.

  The plurality of chains 11 are rotationally driven in synchronization by a chain drive motor (not shown), and a predetermined (for example, 10 mm) left side of the material diameter information input in advance to the control device and the main body vice reference line BL in FIG. With the sensor (not shown) at the offset position of the material, the material detects the material end face while feeding the plurality of chains 11 in the Y-axis direction (right to left in FIG. 2). From the material diameter information and the offset amount of the sensor position with respect to the main body vice reference line BL, the remaining movement amount is calculated, and the remaining movement distance of the chain 11 is detected by a rotary encoder (not shown). The material supply device is provided with material supply means so as to position the material supply above the roller reference line RL in the X-axis direction according to a command from the control device.

  The plurality of chains 11 are horizontally supported by a chain support member 13 (see FIG. 3) made of a channel member provided on a base (not shown) of the material benefit device 9.

  The material feed roller 3 is rotatably supported on an upper portion of a support column 17 erected at an appropriate interval in the X-axis direction on the upper surface of a square pipe-like lifting base 15 extending horizontally in the X-axis direction. is there.

  As shown in FIG. 1, a sprocket 19 is attached to each material feed roller 3 in order to rotate each material feed roller 3, and a plurality of sprockets 21 are provided on the elevating base 15 in the vicinity of the lower part of the side surface of the column 17. (See FIGS. 4 and 5).

  The elevating base 15 is equipped with a roller drive motor 27 for rotating the drive sprocket 25 via an appropriate power transmission mechanism 23 such as a belt or a chain, and the material feed roller 3 is a roller. A chain 29 is wound around the drive sprocket 25 and the sprockets 19 and 21 so as to be driven to rotate by a drive motor 27.

Therefore, by driving the roller drive motor 27, the chain 29
A plurality of material feed rollers 3 are synchronously rotated in the same direction via the, so that the round bar material W on the material feed roller 3 can be fed to the cutting machine 1 and the remaining material is returned during reverse rotation. It is a material feeding device provided with material feeding means so that it is possible.
.

  Referring to FIGS. 1 to 6, a front lift guide 31f and a rear lift guide 31r (FIG. 2, FIG. 2) are provided at the front and rear portions of the lift base 15 to guide the lift base 15 so as to be movable up and down in the vertical direction (Z-axis direction). (See FIG. 5).

  The configuration of the rear lift guide 31r is the same as that of the front lift guide 31f except for a part thereof, so that the front lift guide 31f will be mainly described.

  As shown in FIG. 2, the front lift guide 31f includes a guide post 33 and a guide base 35 that guides the guide post 33 in the Y-axis direction (left-right direction in FIG. 2).

  The guide base 35 is connected to the floor surface F.V. through a flange portion 35f provided integrally with the guide base 35. L is installed horizontally. An upper surface of the guide base 35 is provided with an inclined surface 37 having a gradient θ that rises toward the main body vice reference line BL located in the Y-axis direction (rightward in FIG. 2). On the inclined surface 37, a pair of parallel guide rails 39 configured so that the inclined surface can be easily linearly moved with a linear guide are extended and laid in the Y-axis direction.

  The guide post 33 includes a support base portion 34 having a flat upper surface and an elevating guide portion 33f erected integrally with the support base portion. A slope θ parallel to the inclined surface 37 is provided, and a plurality of (two in the embodiment, a total of four in this embodiment) engaging with the guide rail 39 of the linear guide on the bottom surface of the support base portion 34 movably. A guide 41 coupled to the bearing of the linear guide is engaged.

  As shown in FIGS. 2 and 4, the lower surface of the support base portion 34 provided integrally with the guide post 33 extends between the parallel guide rails 39 along the inclined surface 37. A drive shaft 43 such as a ball screw is rotatably engaged with a nut member 45 fixed to the left end portion of the support base portion 34.

  A bevel gear 50 that engages with a bevel gear 49 provided on a synchronous rotation shaft 47 orthogonal to the drive shaft 43 is provided at the left end portion (left side in FIGS. 2 and 4) of the drive shaft 43. A driving motor 51 (see FIG. 6) for moving and positioning the front lift guide 31f in the Y-axis direction is provided at the other end of the synchronous rotating shaft 47. A rotary encoder 52 that detects the amount of rotation of the synchronous rotating shaft 47 and measures the amount of movement of the front lift guide 31f in the Y-axis direction is provided at the distal end portion (the lower end portion in FIG. 4) of the synchronous rotating shaft 47. is there.

  The elevating guide portion 33f has an X-axis guide groove 53a that allows movement in the Z-axis direction between the front lift guide 31f and the elevating base 15 and restricts relative movement in the Y-axis direction and the X-axis direction. And a Y-axis guide groove 53b.

  On the other hand, the elevating base 15 is integrally provided with a guide roller holding portion 15h for fixing and holding a guide roller shaft 56 that pivotally supports guide rollers 55a and 55b engaged with the guide grooves 53a and 53b so as to be movable up and down. It is provided.

  In addition, a cylinder bracket 57 that projects horizontally from the lifting base 15 in the left-right direction (Y-axis direction) is integrally provided on the lower surface of the lifting base 15, and the guide post is disposed on the cylinder bracket 57. Two pneumatic or hydraulic cylinders 59 each having a piston rod in contact with and engaging with the upper surface of the support base portion 34 provided integrally with 33 are provided.

  By the way, since the rear lift guide 31r is different from the front lift guide 31f only in that the rear lift guide 31r has only the Y-axis guide groove 53a, the same reference numerals are used for the other identical components. A description thereof will be omitted.

  In the above configuration, the amount of movement from the material diameter information stored in advance in the control device and the current position information of the drive motor to the roller reference line RL is calculated, and the drive motor 51 is driven forward or backward to drive the front The bevel gear 50 engaged with the bevel gear 49 of the synchronous rotation shaft 47 in the lift guide 31f and the rear lift guide 31r is rotated, and the drive shaft 43 pivotally supported by the support base portion 34 is rotationally driven. The position of the roller reference line RL passing through the center of the V-groove of the material feed roller 3 provided on the column 17 of the lifting base 15 in which 31f and the rear lift guide 31r engage simultaneously to be movable up and down with respect to the main body vice reference line BL. The round bar side surface level adjusting device 10 is provided with a round bar side surface level adjusting means for positioning.

  That is, after the material benefit conveyor 7 positions the material end surface on the main body vice reference line BL, or at the same time, the material feeding device 5 sets the roller reference line RL at the center of the material. Since the groove center can be moved and positioned in the Y-axis direction, if the cylinder 59 is operated after the above-described positioning, the material is supported by the material feed roller 3 so that it can be gripped on the basis of the main body vise.

  By the way, at the time of movement positioning with respect to the main body vice reference line BL, the front lift guide 31f and the rear lift guide 31r move along the inclined surface 37 in the Y-axis direction and simultaneously move up and down in the Z-axis direction. The roller 3 also moves up and down in proportion to the amount of movement in the Y-axis direction.

  The amount by which the material feed roller 3 moves up and down in proportion to the amount of movement in the Y-axis direction will be described with reference to FIG.

As shown in FIG. 7, for example, round bar materials W _{1 to} W ₄ having various diameters are placed on the V grooves of the material feed roller 3, and the material feed roller 3 is moved in the direction of the main body vice reference line BL in the Y-axis direction. When the right end surface of the round bar materials W _{1 to} W ₄ of various diameters is positioned so as to coincide with the main body vice reference line BL, the bottom surface and the material of the round bar materials W _{1 to} W ₄ A straight line AA passing through the intersection points P _{1 to} P ₄ with the V groove center V of the feed roller 3 can be drawn.

The above-mentioned straight line A-A is a downward slope with a downward slope, and the slope is a radius of the round bar material W _1, a radius of the round bar material W ₄ is r, and a level between the intersection points P ₁ and P ₄ . When the difference is ΔZ, it is expressed as ΔZ / (R−r) = tan θ. Note that θ is an angle formed by the straight line AA and a horizontal line parallel to the Y axis. Therefore, if Shiteyare the gradient to zero, the level the level of the bottom of each round bar material W ₁ to _W-4 can be the same.

That is, if the gradient of the guide base 35 is ΔZ / (R−r) that rises toward the main body vice reference line BL, the right end surfaces of the round bar materials W _{1 to} W ₄ are made to be the main body vice reference line BL. The level difference generated when the positioning is performed so as to coincide with zero can be made zero, and the round bar bottom level adjusting device 12 is provided with round bar bottom level adjusting means.

  In the embodiment of the round bar material bottom level constant supply device according to the present invention, the angle of the V groove of the material feed roller 3 is set to 151 °, and the diameter of the round bar material W to be conveyed is φ330 to φ30. The gradient θ of the inclined surface 37 is set to about 1/30 (about 1.9 degrees in angle) from the above theory.

  Next, the relationship between the angle of the V groove of the material feed roller 3 and the gradient θ of the inclined surface 37 will be described with reference to FIG.

Referring to FIG. 8, the angle of the V groove 61 of the material feed roller 3 is 2α that is divided to the left and right with respect to the center line V, the center of the large-diameter round bar material W ₁ is O ₁ , the radius is R, and the small diameter When the center of the round bar material W ₂ is O ₂ and the radius is r, the round bar materials W ₁ and W ₂ are in tangential contact engagement with each other in the V groove 61 of the material feed roller 3. by the distance between the bottom point P ₃ and the bottom point P ₁ of the round bar material W ₁ of 61 Z, the distance between the bottom P ₂ of the bottom point P ₃ and the round bar material W ₂ and Z ' For example, the gradient θ of the inclined surface 37 is a ratio of “adjustment amount in the Z-axis direction” / “difference in radius of the round bar material” and is expressed by the following equation (1).
[Equation 1]
tanθ = (Z-Z ') / (Rr) = (1-sinα) / sinα (1)
Here, sin α = r ′ / a ′ = r / a, and 0 ° <α <90 °.

  Next, FIG. 9 shows a case where the material feeding roller 3 is inclined by an angle β with respect to the center line V of the V groove 61.

Referring to FIG. 9, the bottom point of the V groove 61 P ₃ and the round bar material W Z distances in the Z-axis direction (vertical direction) between the bottom point P ₁ of _1, bottom point P ₃ of the V-groove 61 The distance in the Z-axis direction (vertical direction) between the center of the round bar material W ₂ and O ₂ is b ′, and similarly the Z between the bottom point P ₃ and the bottom P ₂ of the round bar material W ₂ gradient in the axial direction the distance (vertical direction) Z '(= b'-r ), if the distance between the center O ₁ and the bottom point P ₃ of the round bar material W ₁ is H, the inclined surface 37 θ is expressed by the following equation (2). Note that when β = 0, the above equation (1) is satisfied.
[Equation 2]
tanθ = (Z-Z ') / (Rr) = (cosβ-sinα) / sinα (2)
Here, sin α = r ′ / a ′ = r / a, H = a * cos β, and 0 ° <α <90 °.

As shown in FIG. 9, the gradient θ _{2 in} the Y-axis direction of the center V ′ of the V-groove 61 due to the center of the V-groove 61 being inclined by the angle β with respect to the center line V of the V-groove 61 is “Y-axis Direction adjustment amount ”/“ difference in the radius of the round bar material ”, and the distance between the bottom point P ₃ of the V groove 61 and the central axis V of the round bar material W _{1 in} the Z-axis direction is C If the distance between the round bar material W ₂ and the center in the Z-axis direction is C ′, the following equation (3) is obtained.
[Equation 3]
tanθ ₂ = (C-C ') / (Rr) = sinβ / sinα (3)

  FIG. 10 is a diagram for considering the gradient when the outer diameter portion of the round bar material W does not contact the inner surface of the V groove of the material feed roller 3 with a tangent line.

FIG. 10 shows that the outer diameters of the large-diameter round bar material W ₁ and the small-diameter material W ₂ are related to the part P ₄ of the V-groove of the material feed roller 3 in which the angle of the V-groove of the material feed roller 3 is a half angle α. The supported state is shown.

In FIG. 10, the half angle α of the V groove, the radius r of the small diameter material W ₂ , the distance L between the bottom P ₃ of the V groove and the shoulder P ₄ of the V groove are known, and the small diameter material W ₂ The intersection of the bottom surface and the V groove center line V is P ₂ , the intersection of the large diameter material W _{1 with} the V groove center line V is P ₁ , the center of the large diameter material W ₁ is O ₁ , and the center of the small diameter material W ₂ is O _2, and the angle _{P 1 O 1 P 4 = Δ} 1, when the angle _{P 2 O 2 P 4 = Δ} 2, since _{r / sinα = L / sinΔ 2} , sinΔ 2 = L * sinα / r, therefore, delta ₂ = sin ⁻¹ (L * sin α / r), and Δ ₁ = sin ⁻¹ (L * sin α / R).

Then, since θ = 180 ° − (α + Δ ₂ ), the distance D between the bottom P ₃ of the V groove and the center O ₂ of the small diameter material W ₂ is
[Equation 4]
D = sin (180 °-(α + sin ^-1 (L * sinα / r))) * r / sinα (4)
It becomes. Thus, the distance X between the bottom P ₃ and P ₂ of the small diameter material W ₂ of the bottom of the V-groove is shown by the following formula (5).
[Equation 5]
X = sin (180 °-(α + sin ^-1 (L * sinα / r))) * r / sinα-r (5)

Similarly the distance from O ₁ of W ₁ to the bottom P ₃ of O ₁ V grooves be calculated, 'when considered, (X-X (X- X)' for) :( R-r) ratio Since the angle Δ changes depending on the radius r, it has a variable ratio relationship, that is, a simple mechanism like the embodiment according to the present invention that can be expressed by a unique linearity cannot be adopted.

However, since the length L and the angle α due to the angle Δ are constant, it is a fractional function with r as a variable, and the angle formed by the centers O, P ₄ and P ₃ of the material W is 90 ° or more. In this case, since the material W comes into contact with the end point of L, L * sin α <r.

  If this is the case, it is possible to approximate the line to some extent, so if the gradient is multistage, it can be in a practical range. If accurate positioning control is performed, a mechanism for arbitrarily positioning using servo control or the like based on the position calculation result may be used.

  Furthermore, the relationship between the V groove width and the diameter of the round bar material gradually decreases the rate of raising the bottom of the round bar as the diameter increases, so the gradient remains at the first stage. A practical range that can be used is assumed.

  By moving the guide post 33 in the direction of the main body vice reference line BL by the material supply device as described above, when the elevating base 15 is raised to the pass line PL position that becomes the transport level on the cutting machine side, The difference between the bottom level of the material supported by the V-groove roller of the feed conveyor and the conveyance level on the cutting machine is mechanically corrected by the upward slope provided on the guide base 35 for the bottom level of each round bar material. Can be fed to a cutting machine at the same level.

  Therefore, when feeding the round bar material to the cutting machine, the operator does not have to worry about the difference between the bottom level of the material supported by the V groove roller of the feeding conveyor and the conveyance level on the cutting machine side, The material collides with the conveying roller on the cutting machine side, which makes it difficult to feed the material. The pass line PL is located slightly above the chain 11 of the material benefit conveyor 7.

  In the above-described embodiment of the present invention, the front lift guide 31f and the rear lift guide 31r are moved along the inclined surface 37 with the gradient θ in the Y-axis direction to be supported in the V groove of the material feed roller 3. Although the difference in level between the bottom surfaces of the material W is different depending on the difference in diameter, it is mechanically corrected by the gradient of the guide base. However, the front lift guide 31f and the rear lift guide 31r are moved in the Y-axis direction. It may be provided so as to be movable in the Z-axis direction, and the position of the Y-axis movement amount and the Z-axis movement amount may be individually controlled by synchronous control or asynchronous control by a control device. That is, by controlling the Y-axis movement amount and Z-axis movement amount of the material feed roller 3 synchronously or asynchronously by the control device, the bottom surface level of the material W supported by the V-groove of the material feed roller 3 has a diameter. The level difference caused by the difference may be corrected.

  By the way, when we talk about supporting the tangential contact of the round bar material on the V-groove surface, for example, according to the Japanese Building Standard Law, etc., it has a structure that is safe against horizontal force (at the time of a medium earthquake) twice its own weight. It is hoped that there will be. Considering the area where there are few earthquakes and the above-mentioned criteria, it is also possible to assume that it is preferable to assume a case where a horizontal external force of 5% to 25% of the weight of the round bar material is applied to the round bar material. Further, the angle that can be endured by the V-groove surface is calculated by “90 ° −angle α + angle β” or “90 ° −angle α−angle β” when the angle α and the angle β are considered. In relation to the smaller angle a of both of the inclinations of the above, the angle at which the horizontal external force of 5% to 25% of the own weight is balanced is related to the weight of the round bar material and the horizontal external force applied to the center of the round bar material. The angle a can be set.

This point will be described with reference to FIGS. FIG. 11 is a diagram showing the moment balance around the point A and explains the angle a at which the weight of the workpiece W and the horizontal external force F are balanced. That is, the weight W can be decomposed into H in the horizontal direction and V in the vertical direction, and the horizontal component force H and the horizontal external force F can be balanced. At this time, if the horizontal external force F is defined as allowing 20% of its own weight W, for example, by law or some standard, the angle a is naturally determined as tan ⁻¹ (H / V) ≈11.3 degrees.

  When the workpiece weight W is 150 kgf, the horizontal external force is 1% to 30% of W, the angle a is calculated, and a ′ (= 90 ° − when the angle β is swung from 0 ° to 7 °. a) The (H / V) angle changed according to the angle β, and the V groove width (one side) when φ400 is placed on the V groove are as shown in FIG.

  At this time, it is calculated that the V groove width for one side is 40 mm or more and 95 mm or less and the horizontal external force F is 5% or more and 25% or less of the workpiece weight W according to the design intention of the machine. It is enclosed and displayed. From this result, it was determined that the angle β was in the range of 0 ° to 5 °.

  Considering the angle β again, as described above, the horizontal external force applied to the round bar material from the safety aspect is uniform on both side surfaces in the Y-axis direction as a theoretically preferable seismic angle with respect to the Y-axis direction. However, in combination with the allowable range of the horizontal force with respect to its own weight, a substantial effect can be obtained as long as the angle β is 0 ° to 5 °.

DESCRIPTION OF SYMBOLS 1 Cutting machine 3 Material feed roller 5 Material feed device 7 Material supply conveyor 9 Material supply device 10 Round bar side surface level adjustment device 11 Chain 12 Round bar bottom surface level adjustment device 13 Chain support member 15 Lifting base 15h Guide roller holding part 17 Support | pillar 19 Sprocket 21 Sprocket 23 Power transmission mechanism 25 Drive sprocket 27 Roller drive motor 29 Chain 31f Front lift guide 31r Rear lift guide 33 Guide post 33f Lifting guide part 34 Support base part 35 Guide base 35f Flange part 37 Inclined surface 39 Guide rail 41 Bearing of Guide 43 Drive shaft 45 Nut member 47 Synchronous rotation shaft 49 Bevel gear 50 Bevel gear 51 Drive motor 52 Rotary encoder 53a X-axis guide groove 53b Y-axis guide groove 55a 55b guide roller 56 guide roller shaft 57 cylinder bracket 59 cylinder 61 V grooves BL body vice reference line F. L Floor RL Roller reference line V Center line Round bar material W (W _{1 to} W _n )

Claims (5)

In round bar material supply method for supplying to the cutting machine round bar material in the longitudinal direction of the round bar stock, horizontal plane the direction of Okuzai the round bar material into the cutting machine X-axis direction, the X-axis direction in a direction perpendicular to the Y-axis direction, the X, the direction perpendicular to the Y-axis direction and Z axis direction, feeding the round bar material in the X-axis direction for conveying to said cutting machine is supported on a V-groove rollers a round bar material feeding means for wood, the round bar material benefits means for feeding material to the round bar material in the Y-axis direction to pass to the round bar material feeding means, said round bar stock feeding means is the round bar material a round bar material side level adjusting means for positioning in the Y-axis direction upon receiving from the material benefits means is the material the height direction when the round bar stock feeding means is Okuzai the round bar material into the cutting machine a round bar stock bottom level adjustment means for adjusting the height in the Z-axis direction, At the same time the Kimarubo material benefit means the material supplying the round bar material such that an end surface level of the round bar material is matched to the body vice reference line of the cutting machine, the round bar material bottom level adjusting means the round bar material The difference between the bottom level of the round bar material supported by the V-groove roller of the round bar material feeding means and the conveyance level on the cutting machine side is mechanically corrected by the positioning position of the side surface level adjusting means. and uniquely adjust the height of the round bar material so that a level level, characterized in that the said round bar material of the bottom level when the round bar material feeding means is Okuzai to the cutter is constant A round bar material bottom level constant supply method. In the round bar material feeding apparatus having a material feeder for Okuzai the round bar material in the longitudinal direction of the round bar stock to a cutting machine, and a material benefit apparatus for benefit of the round bar material to said workpiece feed device, wherein the direction of Okuzai round bar material to the cutting machine and the X-axis direction, Y axis direction to benefit the round bar material the material benefits system are orthogonal on a horizontal plane relative to the X-axis direction to the material feeding device and direction, the X, when the vertical direction to the Y-axis direction and Z axis direction, and the feed material conveyor comprising a rotatable material feed rollers for supporting at least the round bar material with a V-groove, the material feed a round bar material bottom level adjusting device for the Z-axis direction adjustment of the roller, round bar material side of the V groove center of the material feed roller in a position to be benefits of the round bar material from the material benefits system for the Y-axis direction positioning includes a level adjusting device, said Marubomoto The provided materials Okuzai device for Okuzai to the cutting machine in the X-axis direction, includes a material benefit conveyor comprising a rotatable chain supporting at least the round bar material, receiving the round bar material into the material feeding device comprising a material benefit apparatus for benefits in the Y-axis direction to pass, operation of positioning the round bar material such that said workpiece benefit device matches the end surface level of the round bar material into the body vice reference line of the cutting machine in the Y-axis direction together, when said rod side level adjusting apparatus positioned in the Y-axis direction so as to match the center of the round bar material as a V-groove center of the material feed roller, the said round bar bottom level adjusting device the V The difference between the bottom level of the round bar material supported by the groove roller and the conveyance level on the cutting machine side is mechanically corrected to unambiguously adjust the height of the round bar material to be the same level. , said Round bar material bottom level constant feeder the round bar material of the bottom level is characterized by comprising a constant when the wood feeder is Okuzai to the cutting machine. In a round bar stock bottom level constant supply device according to claim 2, wherein the rod side level adjusting unit and the round bar bottom level adjusting device, be an integral structure, in the direction of the body vice reference line A round bar material bottom level constant supply device characterized by being slidably engaged with a guide base having at least one inclined surface inclined toward the surface. 3. The apparatus for supplying a constant bottom surface of a round bar material according to claim 2, wherein the round bar material is in tangential contact with the V groove of the material feed roller, the V groove angle is 2α, and the inclination of the center of the V groove in the Z-axis direction is set. When β is set, the Y-axis direction positioning means and the Z-axis direction positioning means in the round bar side surface level adjusting device and the round bar bottom surface level adjusting device are uniquely linked, ”Adjustment amount in direction” / “Radial difference of round bar material” is set so that the ratio can be adjusted to (cosβ−sinα) / sinα. A round bar material bottom level constant supply device, wherein the ratio of the difference in the radius of the bar material is adjustable so that the ratio is sinβ / sinα. 5. The round bar blank bottom surface constant supply device according to claim 4, wherein “90 ° −angle α + angle β” or “90 ° −angle α−angle β” is an inclination of both of the V grooves, and whichever angle is smaller. for the relates to a horizontal external force applied to the self-weight and the round bar stock center of round bar material, the angle at which 25% of the horizontal force from 5% its own weight of the round bar material is balanced and the angle, beta is 0 ° A round bar material bottom level constant supply device, characterized in that the angle is 5 ° to 5 °.

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